VISHAY
IL420/ IL4208
Vishay Semiconductors
Optocoupler, Phototriac Output, High dV/dt, Low Input Current
Features
High input sensitivity I
FT
= 2.0 mA
600/800 V blocking voltage
300 mA on-state current
High static dV/dt 10 kV/µs
Inverse parallel SCRs provide commutating
dV/dt > 10 kV/µs
• Very low leakage < 10
µA
• Isolation Test Voltage 5300 V
RMS
• Small 6-pin DIP package
•
•
•
•
•
A 1
C 2
NC 3
6 MT2
5 NC
4 MT1
i179035
Agency Approvals
•
•
•
•
UL - File No. E52744 System Code H or J
CSA -93751
BABT/ BSI IEC60950 IEC60965
DIN EN 60747-5-2(VDE0884)
DIN EN 60747-5-5 pending
Available with Option 1
Applications
Solid-state relays
Industrial controls
Office equipment
Consumer appliances.
dt of greater than 10 kV/µs. This clamp circuit has a
MOSFET that is enhanced when high dV/dt spikes
occur between MT1 and MT2 of the TRIAC. When
conducting, the FET clamps the base of the pho-
totransistors, disabling the firs stage SCR predriver
The 600/800 V blocking voltage permits control of off-
line voltages up to 240 VAC, with a safety factor of
more than two, and is sufficient for as much as
380 VAC.
The IL420/ IL4208 isolates low-voltage logic from
120, 240, and 380 VAC lines to control resistive,
inductive, or capacitive loads including motors, sole-
noids, high current thyristors or TRIAC and relays.
Order Information
Description
The IL420/ IL4208 consists of a GaAs IRLED optically
coupled to a photosensitive non-zero crossing TRIAC
network. The TRIAC consists of two inverse parallel
connected monolithic SCRs. These three semicon-
ductors are assembled in a six pin dual in-line pack-
age.
High input sensitivity is achieved by using an emitter
follower phototransistor and a cascaded SCR pre-
driver resulting in an LED trigger current of less than
2.0 mA (DC)
The IL420/ IL4208 used two discrete SCRs resulting
in a commutating dV/dt of greater than 10 k/µs. The
use of a proprietary dV/dt clam results in a static dV/
IL420
IL4208
IL420-X006
IL420-X007
IL420-X009
IL4208-X007
IL4208-X009
Part
Remarks
600 V V
DRM
, DIP-6
800 V V
DRM
, DIP-6
600 V V
DRM
, DIP-6 400 mil (option 6)
600 V V
DRM
, SMD-6 (option 7)
600 V V
DRM
, SMD-6 (option 9)
800 V V
DRM
, SMD-6 (option 7)
800 V V
DRM
, SMD-6 (option 9)
For additional information on the available options refer to
Option Information.
Document Number 83629
Rev. 1.4, 26-Apr-04
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